1. Ifihan
This manual provides comprehensive instructions for the operation and maintenance of your Sharp EL-1901 Paperless Printing Desk Calculator. Please read this manual thoroughly before using the calculator to ensure proper function and longevity.
Ọja Pariview
The Sharp EL-1901 is a paperless printing calculator designed for efficiency and environmental consciousness. It combines the robust functionality of a traditional desktop calculator with an innovative digital display that eliminates the need for paper and ink. Its unique features include a large 12-digit primary LCD and a secondary 5-line scrolling LCD for reviewing past calculations.
Key Awọn ẹya ara ẹrọ
- Isẹ ti ko ni iwe: Eco-friendly design eliminates the need for paper rolls and ink ribbons.
- Dual LCD Displays: Features a large 12-digit primary display and a secondary 5-line scrolling display for reviewing up to 300 previous entries.
- Check and Correct Function: Easily modify and recalculate entries within the 300-line history for accuracy.
- Bọtini Titobi: Includes dedicated keys for tax calculations (TAX+, TAX-), cost/sell/margin (COST, SELL, MGN), grand total (GT), backspace, and memory functions (M+, M-, M*, M/).
- Quiet and Fast Operation: Provides instant results without the noise associated with traditional printing calculators.
- Agbara AC: Designed for continuous use with an included AC adapter.
2. Eto
Agbara Ẹrọ iṣiro
The Sharp EL-1901 calculator is primarily powered by an AC adapter. Locate the AC adapter port on the side or rear of the calculator and plug in the provided adapter. Connect the adapter to a standard electrical outlet.
For backup or memory retention, the calculator also requires 1 CR2032 battery. Ensure this battery is installed correctly in its compartment, typically located on the underside of the unit, to maintain settings and memory during power interruptions or when the AC adapter is disconnected.

olusin 2.1: Iwaju view of the Sharp EL-1901 calculator, showing the main display and secondary scrolling display.
3. Awọn ilana Iṣiṣẹ
Awọn iṣẹ ipilẹ
To turn the calculator ON, press the TAN/PA button. The main 12-digit display will illuminate. The secondary 5-line display will show previous entries or be blank if reset.
- Ìtẹ̀síwájú Nọ́mbà: Use the numeric keypad (0-9, 00, .) to enter values.
- Awọn iṣẹ Iṣiro: Lo awọn + (addition), - (subtraction), x (multiplication), and ÷ (division) keys. Press = to calculate the result.
- Pa ìwọlé rẹ rẹ́/Pa gbogbo rẹ̀ rẹ́: Awọn C/CE key clears the last entry. Pressing it twice typically clears all entries and resets the calculation.
- Aye ẹhin: Lo awọn ← key to delete the last digit entered.
- Change Sign: Lo awọn +/- key to change the sign of the displayed number.
Paperless Printing and Scrolling Display
The secondary 5-line LCD acts as your digital "paper tape," displaying up to 300 lines of previous calculations. Use the ▲ (soke) ati ▼ (down) arrow keys to scroll through your entry history.

olusin 3.1: Isunmọ view of the calculator's main 12-digit display and the secondary 5-line scrolling display.
Check and Correct Function
Ẹya ara ẹrọ yi faye gba o lati tunview and edit past entries. While viewing the history on the secondary display:
- Lo ▲ ati ▼ to navigate to the entry you wish to correct.
- Tẹ awọn Atunse key. Enter the new value.
- Tẹ FI ILE to add a new line before the selected entry, or PAArẹ to remove the selected entry.
- The calculator will automatically recalculate the total based on your changes.
- To clear all entries from the secondary display, press the PA GBOGBO bọtini.
Video 3.1: Official product video demonstrating the Sharp EL-1901 Paperless Printing Calculator, highlighting its check and correct function and dual displays.
Awọn iṣẹ pataki
- Cost/Sell/Margin (COST, SELL, MGN): These keys simplify profit margin calculations. Enter any two variables (cost, selling price, or margin percentage), and the calculator will automatically compute the third.
- Tax Keys (TAX+, TAX-): Use these keys for quick tax calculations. Set the tax rate using the Iṣeto Oṣuwọn bọtini.
- Total Lapapọ (GT): Accumulates the results of multiple calculations. Press GT to display the grand total.
- Memory Keys (M+, M-, M*, M/): Store and recall values from memory.
- M+: Ó ń fi iye tí a fi hàn kún ìrántí.
- M-: Yí iye tí a fi hàn kúrò nínú ìrántí.
- M*: Multiplies the displayed value with memory.
- M/: Divides the displayed value with memory.
- RM/CM: Recalls memory content / Clears memory content.
- Rounding Keys (ROUND, DEC): Adjust rounding settings for calculations.
4. Itọju
Ninu
Láti nu ẹ̀rọ ìṣirò náà, lo aṣọ rírọ̀ tí ó gbẹ. Fún eruku líle, díẹ̀ díẹ́ampen the cloth with water or a mild, non-abrasive cleaner. Do not use strong solvents or abrasive materials, as they may damage the surface or displays.
Batiri Rirọpo
The calculator uses one CR2032 battery for memory backup. If the display shows erratic behavior or memory functions are unreliable when the AC adapter is disconnected, the battery may need replacement.
- Ensure the calculator is turned off and disconnected from the AC power.
- Locate the battery compartment on the underside of the calculator.
- Open the compartment cover (you may need a small screwdriver).
- Remove the old CR2032 battery and insert a new one, observing the correct polarity (+/-).
- Pa ideri batiri naa ni aabo.
5. Laasigbotitusita
If you encounter issues with your Sharp EL-1901 calculator, please refer to the following common problems and solutions:
| Isoro | Owun to le Fa | Ojutu |
|---|---|---|
| Calculator does not turn on or respond to key presses. | No power, loose AC adapter connection, or internal malfunction. |
|
| Secondary display (scrolling history) is blank or not updating. | Display cleared, or a temporary software glitch. |
|
| Awọn abajade iṣiro ti ko tọ. | Incorrect entry, incorrect function used, or rounding settings. |
|
6. Awọn pato
- Awoṣe: THE 1901ST
- Brand: Dinku
- Awọn iwọn ọja: 11.02 x 8.27 x 3.15 inches
- Ìwọ̀n Nkan: 1.94 iwon
- Orisun Agbara: AC Adapter
- Batiri: 1 x CR2032 (for memory backup)
- Iwọn iboju: 4 Inches (primary display)
- Iru ifihan: 12-Digit LCD Primary, 5-Line Scrolling LCD Secondary
- Àwọ̀: Funfun
7. Atilẹyin ọja ati Support
For warranty information, please refer to the documentation included with your purchase or visit the official Sharp Calculators website. If you require technical assistance or have questions not covered in this manual, please contact Sharp customer support.
Official Sharp Calculators Webojula: www.sharpcalculators.com